Internal-combustion engine.



No. 872,497, EATENTEDDEGLS, 1907.

' A. CAMPBELL. L INTERNAL coMEUsEIoN ENGINE.

L APPLICATION FILED N05T.1v8,`1906. V

fffnojsvgnsa L INfrEiNan-crrsos'roi; ENGIN'EQ.

' l: Specification of 'Letters Patent.

- ratentea'nee. 1901. v

,To all' whomfifmy. 25mm;

. ne it known thai, *nemmeno-Mie fax, orkshire, En lan d,`have'inventedfcen;

' tainnew and useful Improvements in Inter-f nal-Combustion Engines;-v and. l do' hereby I declare -thefollowin '-to be'afiull, clear., and( exact description. o; the invention,` such. as

. will-enable othersskilled inthe; art izo-which.

1.0 tailliert-,eins to make .and use mme f' le mVenti-m'remtes to internal CombuS-Z quired time, .by meas -ofj .afcireuit breaking I plnger actuated by the engine piston.

" ln the vd1"aWi 11gs, Figure1 isa longitudinal v Section Athrough the rear end oi ages-engine l:.cylinler provided Withanigniter according.

t'or'this invention. Fig.f.2 -is a similarlo i`'v 4tudinal section showing a modification int ev igniter.'`

- Theinven ina 'art of this specification.- 1

erringrs'tly to Figure l a represents 4 lin section" aportion-ofthecombustion end of.

the cylinde'nintowhich is screwed or otherf wise fitted a circularplug'. b, bolted or fixed,

any other .convenientmeans' ontoA the outside wallof thewater jacket c, and made fof any size and shape tol suit the engine to insulated'therefrom 'at the points ,ductor tube einto,which is flxeda terminal which. ittis applied.. Within the plug-and f connected flio/one pole-.of afina neto; dy-f namo', accumi'il'ator-or .other 'sulta le source of electric current. Within this'y tube@ and insulated therefrom at the, oints gy 'is a'v lan ed tube-or socket kjtA oughy which wor svfreelyj-aplunger comprising asecond" flanged .tube o'r sleeve 't'- and ga' spindle j screwedthou h the' saidtube i. The spring .k normally ho ds' 'down' the lunger so that 45, tact wit the 'contactilate or cap 'Zy attachedthe screwedferru emv to the conductor tube e, and 'the terminala1 on the spring case the flan e on the eind ofthe-s eeve/ is in con- 'n is'wir'ed-to thebojdyoi the engine, which is in connectionat any convenient oint-'with the 4other pole ofthe 'dynamoor t e like, so

that the current passes through the cap ,l and sleeve i; Whenthel piston'o returns l to thel`- combustion end of the cylinder,"it pressesi'n `the' projectingl end of'thes'pindle y, thereby 'Y vseparating the anged sleeve 'i from the con# ion belvclealrly: understood by reference to the annexed drawings formtactplate or cap Z, when an electric spark-.gr q

series of sparks passes between these .partsy .which gnites the combustible mixture. 'llc' Yregulate the time atwhich thespark occurs,-'

the spindle j can be screwed up or down within its'sleeve @reducing or increasing itspror will-strike the rsaidspindle later vor'sooner as may be desired. 'A pinion jl (which may be jection beyond the cap l, So `that the pistoniactuated by a gear wheel operated, inthe: caseof a-motor roadvehicle, vfrom thefdashl board) fis provided -onfthe spindle y', so that 'such' alteration can conveniently be effected "While the engine is atvwork. The'nut lorWasher'pt vhicfh .may be made in'twofpartsclamped'together u ontheupperl vents the sleeve from rotating with the sPindleii.

en d'of the sleeve llisshown wit a projection` "orlug'jpthereon fitting'.intol a slot in? inthe spring case n.' This allows the nut or washer -p -to rise andfall with the'plunge'r buty prelf- 't is notnecessary to provide meansmfor varying the timefatlf-Which the spark1`0-ccurs, that is 'ifit is requisitefthat thespark should Asov always occur' at a `li'xe'dfpoint in the working l 'be-re uired.

- -Re 4erring now to which illustrates af' l modification, 'the conductor; tube e'is disf and Vthe spin 'le .jmay be madeintegral-or p iec'eand the Vgear wheels will not'then" vsa Y pensedwi'th, the platel being" screwedor "contact'with the engine'tojwhiclrthewiref carrying current; from` one pole is led,` :the other wne' beingled to jthespring case n as '5 before 'mentionedf :The piston [must then-be 'insulated .a't'fq to allow ofthecircuit being -vbroken'by the movement 'of the plunger, f

The -ignitersma vbe' laced either parallel s des'ignof--the engine'. L u My invention-although perhaps 'especially motor applicable` tothe engines or. motors c road vehicles, canbe .applied to internal combustion engines in genera Yl claim as my mventionz-- x plu'g,f cfg-'a contact-platel secured to" t plug, a Atube or socket carried 'by' the' Said i plugand insulated from the said contactplate`a contactjsleeve slidable- :the said tube Orsocket and provided with means foriy y preventing it from revolving, a springwhicli normally holds the said contact-sleeve and preventinu it froinrevolving, a spring which euntvzictf-platein('Qntacgandalongitndinally normally zliolds the said contact-sleeve and 15 adjustable 4s )inille screwthreaded tu engage j contact-plate in Contact',amlaloigitudinally- I with the sai'Contact-sleeve and projecting 'f adjustable spindle sc-rewtlxreaded to engage ",5 plst ille said contact-plate. v i with the said contact-sleeve nifl prjecting The umbinatgion, with a `supportin past the said contact-plate.

plug, gf an insulated"conductor-tube carrieV ln testimony whereof l afliX my signature, 20 by the said plug, a contactlate carried by inpresence of two witnesses. Llie vsr'aid eonductoretube an lalso insnljafted 1,4.'4 Lr 3 A 10 imm ighe'said plug, mbe 0r socket secured l ALF Ulvn R LAW] BFLL finsidetlie saidcnndueteretnbe and insulasted '.Wlltnesses:

from it, e contact-*sleeve slidable in the said j ERNEST PRIESTLEY Ewn'm,

nbe oi- .soketand provided with means for LEONARD A* CROSSLEY. 

